Glenasmole valley lying in the hill country south of Tallaght on the borderlands of counties Dublin and Wicklow marks the northern boundary of the most extensive exposure of granite in Ireland and Britain. Throughout documented history the glen and the barony of Upper Cross in which it is situated have been part of the extensive church lands of thte archdiocese of Dublin. In 1754 Cobbe, then protestant archbishop of Dublin, leased the Glenasole property to his son Thomas. The Cobbe connection with the valley persisted until the lands were purchased by the tenant occupiers under the provisions of the Land Act of 1933. This chapter utilises Cobbe estate manuscripts, state valuations, census and map records, oral evidence from the people of the glen and a variety of other sources to document ownership and occupation of land, settlement and society in Glenasmole in the period 1700 to 1900. -from Author